6731969 has 4 divisors (see below), whose sum is σ = 6777300. Its totient is φ = 6686640.

The previous prime is 6731957. The next prime is 6731981. The reversal of 6731969 is 9691376.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (6731957) and next prime (6731981).

It can be written as a sum of positive squares in 2 ways, for example, as 506944 + 6225025 = 712^2 + 2495^2 .

It is a cyclic number.

It is not a de Polignac number, because 6731969 - 2⁸ = 6731713 is a prime.

It is a super-2 number, since 2×6731969² = 90638813233922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6731069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22442 + ... + 22739.

It is an arithmetic number, because the mean of its divisors is an integer number (1694325).

Almost surely, 2^6731969 is an apocalyptic number.

It is an amenable number.

6731969 is a deficient number, since it is larger than the sum of its proper divisors (45331).

6731969 is a wasteful number, since it uses less digits than its factorization.

6731969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45330.

The product of its digits is 61236, while the sum is 41.

The square root of 6731969 is about 2594.6038233226. The cubic root of 6731969 is about 188.8197286342.

The spelling of 6731969 in words is "six million, seven hundred thirty-one thousand, nine hundred sixty-nine".